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WO2018152021A1 - Articles à base de verre antireflet à faible brillance à gauchissement réduit et procédés de réduction du gauchissement dans des articles à base de verre antireflet - Google Patents

Articles à base de verre antireflet à faible brillance à gauchissement réduit et procédés de réduction du gauchissement dans des articles à base de verre antireflet Download PDF

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Publication number
WO2018152021A1
WO2018152021A1 PCT/US2018/017579 US2018017579W WO2018152021A1 WO 2018152021 A1 WO2018152021 A1 WO 2018152021A1 US 2018017579 W US2018017579 W US 2018017579W WO 2018152021 A1 WO2018152021 A1 WO 2018152021A1
Authority
WO
WIPO (PCT)
Prior art keywords
glass
based article
glare
warp
article
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2018/017579
Other languages
English (en)
Inventor
Haixing CHEN
Ling Chen
Chenglong Dai
Liming Wang
Li Yao
Jianqiang Zhu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Corning Inc
Original Assignee
Corning Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Corning Inc filed Critical Corning Inc
Priority to US16/485,337 priority Critical patent/US11104604B2/en
Publication of WO2018152021A1 publication Critical patent/WO2018152021A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C15/00—Surface treatment of glass, not in the form of fibres or filaments, by etching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/30—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C21/00—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface
    • C03C21/001—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface in liquid phase, e.g. molten salts, solutions
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C21/00—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface
    • C03C21/001—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface in liquid phase, e.g. molten salts, solutions
    • C03C21/002—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface in liquid phase, e.g. molten salts, solutions to perform ion-exchange between alkali ions
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
    • G02B1/12—Optical coatings produced by application to, or surface treatment of, optical elements by surface treatment, e.g. by irradiation
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
    • G02B5/021—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures
    • G02B5/0231—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures the surface having microprismatic or micropyramidal shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/42—Polarizing, birefringent, filtering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2315/00—Other materials containing non-metallic inorganic compounds not provided for in groups B32B2311/00 - B32B2313/04
    • B32B2315/08—Glass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2457/00—Electrical equipment
    • B32B2457/20—Displays, e.g. liquid crystal displays, plasma displays

Definitions

  • the present disclosure generally relates to anti-glare glass-based articles, and, more particularly, low sparkle anti-glare glass-based articles with reduced warp and methods for reducing warp in anti-glare glass-based articles.
  • Anti-glare glass articles such as cover glasses for electronic displays, particularly large electronic displays, such as those found in handheld devices, television displays, touch panels, electronic whiteboards, computer monitors, and the like may be particularly constructed to reduce the amount of glare caused by light that is reflected off the glass articles.
  • the anti-glare glass articles may be constructed with a textured surface that effectively reduces surface glare.
  • such glass articles that incorporate a textured surface may exhibit warp due to a surface treatment bias (one side having anti-glare features while a second side does not) that causes a differential surface-to-volume ratio. This may cause differential surface compressive loading of the two surfaces that causes glass warping.
  • Warp may be further introduced into anti-glare glass articles subjected to a strengthening process.
  • large anti-glare glass articles e.g., anti-glare glass articles having a diagonal dimension of 500 mm or greater
  • Warp may be undesirable and may cause the anti-glare glass articles to not meet specifications.
  • a method for processing a glass-based article includes etching a first surface of the glass-based article to create a first anti-glare surface having a plurality of first anti-glare features and etching a second surface of the glass-based article to create a second anti-glare surface having a plurality of second anti-glare features. At least one of a length, a width, and a diagonal of the glass-based article is greater than or equal to 500 mm.
  • a difference of warp between a first warp value before etching the first surface and the second surface and a second warp value after etching the first surface and the second surface is less than or equal to 0.15 mm across each of one or more 500 mm intervals of length, width, or diagonal of the glass-based article.
  • the method may further include chemically strengthening the glass-based article by an ion-exchange process, where the difference of warp between the second warp value before chemically strengthening the first surface and the second surface and a third warp value after chemically strengthening the first surface and the second surface is less than or equal to 0.15 mm across each of one or more 500 mm intervals of length, width, or diagonal of the glass-based article.
  • the first warp value may be equal to the second warp value.
  • the first surface and the second surface may equally contribute to a total haze value of the glass-based article.
  • the first surface and the second surface may equally contribute to a total gloss value of the glass-based article.
  • the first surface and the second surface may unequally contribute to a total haze value of the glass-based article.
  • the first surface and the second surface may unequally contribute to a total gloss value of the glass-based article.
  • etching the first surface and the second surface may comprise applying an etching cream to the first surface and the second surface.
  • a total transmission haze of the glass-based article may be between 1% and 40%.
  • a strengthened glass-based article includes a first antiglare surface having a plurality of first anti-glare features and a second anti-glare surface having a plurality of second anti-glare features. At least one dimensional aspect of the glass- based article is greater than or equal to 500 mm, where the at least one dimensional aspect is a length, a width, or a diagonal of the glass-based article. The glass-based article has a warp of less than or equal to 0.6 mm across the at least one dimensional aspect. In some embodiments, the first surface and the second surface may equally contribute to a total haze value of the glass-based article.
  • the first surface and the second surface may equally contribute to a total gloss value of the glass-based article. In some embodiments, the first surface and the second surface may unequally contribute to a total haze value of the glass-based article. In some embodiments, the first surface and the second surface may unequally contribute to a total gloss value of the glass-based article. In some embodiments, a total transmission haze of the glass-based article may be between 1% and 40%.
  • a display device in yet another embodiment, includes a display panel having a display panel surface and a strengthened glass-based article coupled to the display panel.
  • the strengthened glass-based article includes a first anti-glare surface having a plurality of first anti-glare features and a second anti-glare surface having a plurality of second anti-glare features.
  • At least one dimensional aspect of the glass-based article is greater than or equal to 500 mm, where the at least one dimensional aspect is a length, a width, or a diagonal of the glass-based article.
  • the glass-based article have a warp of less than or equal to 0.6 mm across the at least one dimensional aspect.
  • the glass-based article may be bonded to the display panel surface by an index-matching adhesive and the first surface and the second surface may equally contribute to a total haze value of the glass-based article. In some embodiments, the glass-based article may be bonded to the display panel surface by an index-matching adhesive and the first surface and the second surface equally may contribute to a total gloss value of the glass-based article. In some embodiments, an air gap may be present between the glass-based article and the display panel surface and the first surface and the second surface may unequally contribute to a total haze value of the glass- based article.
  • an air gap may be present between the glass-based article and the display panel surface and the first surface and the second surface may unequally contribute to a total gloss value of the glass-based article.
  • a total haze of the glass-based article may be between 1% transmittance and 40% transmittance.
  • FIG. 1 schematically depicts an example glass-based article according to one or more embodiments shown and described herein;
  • FIG. 2 schematically depicts a cross-sectional view of an example glass-based article having a plurality of anti-glare surfaces according to one or more embodiments shown and described herein;
  • FIG. 3 schematically depicts a cross-sectional view of another example glass- based article having a plurality of anti-glare surfaces according to one or more embodiments shown and described herein;
  • FIG. 4 schematically depicts a cross-sectional view of an example glass article having a single anti-glare surface
  • FIG. 5 schematically depicts an illustrative warp evolution that occurs during formation of the glass-based article of FIG. 4;
  • FIG. 6 schematically depicts an illustrative warp evolution that occurs during formation of the glass article of FIG. 2 according to one or more embodiments shown and described herein;
  • FIG. 7 schematically depicts a plurality of warp measurement locations of a glass-based article according to one or more embodiments shown and described herein;
  • FIG. 8 schematically depicts a warp variation rate for a glass-based article with no anti-glare treatment, a glass-based article with a single anti-glare surface, and a glass- based article with two anti-glare surfaces.
  • Glass-based articles include articles fabricated from glass materials, glass-ceramic materials, or ceramic materials.
  • the term "glass article” and “glass-based article” are used interchangeably herein, and both include glass materials, glass-ceramic materials, and ceramic materials.
  • the glass articles described herein generally include anti-glare features on a plurality of surfaces thereof. As described herein, the glass articles are formed via a method that minimizes warp that occurs as a result of an ion-exchange (IOX) chemical strengthening process. Such warp may be minimized relative to warp that is observed on glass articles having anti-glare features that are formed via other methods.
  • IOX ion-exchange
  • Glare is the reflection of light off of a surface, such as a glass display surface of an electronic device. Too much glare may obscure the underlying display of the electronic device and may make it difficult for a user of an electronic device to see the display.
  • Antiglare surface treatments provide small features on the surface of the glass that scatter light, thereby reducing the appearance of glare and increasing visibility of the underlying display. However, anti-glare treatments may cause undesirable effect such as, without limitation, sparkle and haze.
  • Display “sparkle” or “dazzle” is a generally undesirable side effect that can occur when introducing anti-glare or light scattering surfaces into a pixelated display system such as, for example, a liquid crystal display (LCD), an organic light emitting diode (OLED), touch screens, or the like, and differs in type and origin from the type of "sparkle” or “speckle” that has been observed and characterized in projection or laser systems.
  • Sparkle is associated with a very fine grainy appearance of the display, and may appear to have a shift in the pattern of the grains with changing viewing angle of the display.
  • Display sparkle may be manifested as bright and dark or colored spots at approximately the pixel-level size scale.
  • the present disclosure is primarily concerned with the optical and surface properties of a transparent glass article or sheet that is used as a protective cover glass over an LCD or other pixelated displays.
  • a transparent glass sheet having a roughened surface and optical properties that minimize display "sparkle" and a display system comprising such a transparent glass sheet are provided.
  • surfaces with small-angle-scattering properties or distinctness-of-reflected-image (DOI) which lead to improved viewability in display applications, especially under high ambient lighting conditions, are provided.
  • the anti-glare surface is formed without the application or other use of foreign coating materials (e.g., coatings, films, or the like).
  • the glass articles having the anti-glare surface described herein may be compatible with high definition (HD) displays having pixel densities of about 200 ppi or greater.
  • HD high definition
  • the ability to provide a low sparkle textured glass that is compatible with HD displays having high pixel density may create opportunities for integrating textured surfaces with consumer electronic devices.
  • the glass articles may provide a glass with low sparkle that exhibits positive aesthetic appearance, good tactile feel, and anti-glare functionality.
  • Anti-glare glass with ultra-sparkle has been the subject of intensive research in recent years for their wide application in display and lighting.
  • anti -glare glass that sized for use in devices such as smartphones and tablets shows good performance on both optical attributes and mechanical properties.
  • anti-glare glass of larger sized devices such as televisions and large touch screens, may exhibit warp issues on the glass surface, which is due to their larger size and the thickness of the glass.
  • An IOX treatment strengthens the glass article by exchanging smaller ions near a surface of a glass article with larger ions of an ion exchange solution.
  • a non- strengthened glass article may be disposed in an ion-exchange bath for a period of time in accordance with an ion-exchange process. Larger ions within the ion-exchange bath are exchanged with smaller ions of the glass material.
  • the ion-exchange bath may comprise a potassium salt such that larger potassium ions are exchanged with sodium ions of the glass material.
  • the exchange of ions occurs from a surface of a glass article to a depth of layer (DOL).
  • DOL depth of layer
  • the ion-exchanged region is referred to as a compressive stress layer.
  • a first compressive stress layer is present at the first surface and a second compressive stress layer is present at the second surface.
  • the first and second compressive stress layers possess compressive stress, which is balanced by tensile stress within a central tension region between the first compressive stress layer and the second compressive stress layer.
  • anti-glare surface treatments provided on only a single side may cause the glass article to warp, particularly during and following the IOX treatment.
  • the single-sided anti-glare treatment may create a differential surface to volume ratio (wrinkled surface has higher surface to volume ratio than smooth surface), which may lead to higher compressive loading on the side having the anti-glare treatment than the side lacking the anti-glare treatment.
  • the non-uniform stress profiles may create a bending moment within the glass article, which may cause the glass article to warp.
  • the amount of warp depends on factors such as, without limitation, the size of the glass article, the thickness of the glass article, the composition of the glass article, the size, shape and distribution of surface features of the anti-glare surface, and parameters of the IOX treatment. For example, it has been shown that larger glass articles exhibit more warp than smaller glass articles.
  • FIG. 1 schematically illustrates an illustrative glass article 100 that may be used for an electronic device having a screen that is larger than screens that are typically included in smart phones, tablets, or the like.
  • the illustrative glass article 100 may be used for an electronic device such as a television, an electronic display, an electronic whiteboard, or the like, particularly electronic devices where it may be desirable to eliminate, reduce, and/or minimize glare.
  • the illustrative glass article 100 may be used in an electronic device having a screen with at least one dimension (e.g., a length, a width, or a diagonal) that is greater than or equal to about 500 mm.
  • the glass article 100 may be, for example, a soda lime glass, an alkali aluminosilicate glass, or an alkali aluminoborosilicate glass.
  • the glass article 100 may be a transparent glass sheet.
  • the glass is transparent if it transmits at least 70% of at least one wavelength in a range from about 390 nm to about 700 nm.
  • the glass article 100 may include an alkali aluminosilicate glass that incorporates alumina, at least one alkali metal, and silica (S1O2).
  • An amount of silica within the glass article 100 may be greater than about 50 mol %, at least about 58 mol % S1O2, or at least about 60 mol % S1O2.
  • aluminosilicate glass substrates suitable for use as the glass article 100 may include, but are not limited to, GORILLA ® , EAGLE XG ® , or LOTUSTM brand glass manufactured by Corning Incorporated. Other suitable substrates are contemplated.
  • the glass article 100 may include a strengthened glass substrate, which has been strengthened using thermal or chemical strengthening techniques.
  • the glass article 100 has a first surface 112, a second surface 114, and a perimeter edge 116 disposed between the first surface 112 and the second surface 114.
  • the first surface 1 12 may be an anti-glare surface having one or more first surface features 113 disposed thereon.
  • the second surface 114 may also be an anti-glare surface having one or more second surface features 117 disposed thereon in various embodiments.
  • the first surface features 113 are generally not limited in size, shape, or configuration, and may be any size, shape, and/or configuration that is suitable to provide the first surface 112 with anti-glare properties.
  • the first surface features 113 may have an average size of less than about 20 microns. In other embodiments, the first surface features 113 may have an average size of less than about 10 microns.
  • the one or more first surface features 113 includes a plurality of first surface features 113
  • at least a portion of the plurality of first surface features 113 may be spaced apart from one another, and each of the plurality of first surface features 113 may be bounded by the one or more first flat regions 11 1.
  • the first surface features 113 may be spaced apart from one another such that the first flat regions 1 11 generally extend between each of the first surface features 113.
  • the first surface features 113 may be connected to one another such that there is no (or limited) flat regions
  • the resulting anti-glare surface 1 12 may include a plurality of curved surfaces distributed across a flat surface so that the anti-glare surface
  • first surface 112 is a mixture of flat and curved surfaces.
  • the distribution of first surface features 113 across the first surface 112 may provide anti-glare properties and acceptable aesthetic appearance and feel while at the same time providing a low sparkle glass.
  • the second surface features 115 are generally not limited in size, shape, or configuration, and may be any size, shape, and/or configuration that is suitable to provide the second surface 114 with anti-glare properties.
  • the second surface features 115 may have an average size of less than about 20 microns. In other embodiments, the second surface features 115 may have an average size of less than about 10 microns.
  • the one or more second surface features 115 includes a plurality of second surface features 115, at least a portion of the plurality of second surface features 115 may be spaced apart from one another, and each of the plurality of second surface features 1 15 may be bounded by the one or more second flat regions 1 17.
  • the second surface features 1 15 may be spaced apart from one another such that the second flat regions 1 17 generally extend between each of the second surface features 115.
  • the first surface features 115 may be connected to one another such that no (or limited) flat regions 1 17 exist between adjacent surface features 115.
  • the resulting anti-glare surface 114 may include a plurality of curved surfaces distributed across a flat surface so that the anti-glare surface 1 14 is a mixture of flat and curved surfaces. The distribution of second surface features 113 across the flat surface may provide anti-glare properties and acceptable aesthetic appearance and feel while at the same time providing a low sparkle glass.
  • the first surface features 113 and/or the second surface features 115 of the respective first surface 1 12 and second surface 1 14 of the glass article 100 may be protrusions 120 or the like that extend outward from the glass article 100, as shown in FIG. 2. It should be understood that the first features 113 and the second features 1 15 are not limited to the pyramidal shape depicted in FIG. 2 and that other shapes and configurations are also possible. Referring to FIG. 3 , another glass article 100' is schematically illustrated wherein the first surface features 1 13 ' and/or the second surface features 1 15 ' may be depressions 122 or the like that are recessed into the glass article 100.
  • each of the first surface features 1 13 ' and the second surface features 1 15 ' may be defined as the largest dimension D of each respective surface feature 1 13 ', 1 15 ' when the surface features 1 13 ', 1 15' are viewed from a direction perpendicular to the respective surfaces 1 12', 1 14' of the glass article 100' (i.e., in top view).
  • An average size of the respective surface features 113 ', 115 ' may be less than about 20 microns, less than about 10 microns, or less than about 5 microns.
  • each of the respective surface features 1 12', 1 14' may have a largest dimension D that is equal to or less than about 20 microns, equal to or less than about 10 microns, or equal to or less than about 5 microns.
  • first and second surfaces are merely illustrative examples.
  • Other anti-glare surfaces that incorporate different surface features and/or flat regions (such as continuous surface features or the like) are also included within the scope of the present disclosure.
  • the first and/or second surfaces 1 12, 1 14 may have surface features that are all interconnected in a continuous texture, and no flat regions are interspersed between the surface features.
  • the continuous distribution of the surface features may be such that each surface feature is connected to and/or abuts up against each immediately adjacent surface feature with no intervening flat areas and no interruption in the continuity of the continuous textured layer.
  • the first surface 1 12 and the second surface 1 14 respectively include the first surface features 1 13 and the second surface features 1 15. Inclusion of the surface features 113, 1 15 on both surfaces 1 12, 114 of the glass article 100 may be different from conventional glass articles with anti-glare properties. More specifically, as shown in FIG. 4, a conventional glass article 400 may only have a first surface 412 with surface features 413 thereon. That is, the conventional glass article 400 lacks surface features on a second surface 414 thereof.
  • glass articles for larger electronic panels that only include anti-glare properties on one of the two sides as depicted in FIG. 4 are susceptible to warp .
  • Warp may occur before or after an IOX treatment step, which results in a glass article that is not substantially flat.
  • a glass article 500 having undergone a process of forming anti-glare features 513 on only a single surface 5 12 thereof may exhibit warping, thereby resulting in a warped glass article 500' following an IOX treatment step.
  • the second surface 514 is free from anti-glare treatment and therefore anti -glare features.
  • the non-uniform thickness of the glass article 500 with surface features 513 only on a single surface 5 12 thereof may create non-uniform stress profiles within the glass article due to the IOX treatment step.
  • the non-uniform stress profiles may create a bending moment, thereby causing the glass article 500 to warp.
  • large ion-exchanged glass articles having anti -glare treatment on only a single side surface has a high possiblity of exhibiting large warp after IOX treatment.
  • a glass article 600 having first surface features 613 on a first surface 612 and second surface features 615 on a second surface 614 is schematically illustrated.
  • the symmetrical surface textures provided by the first surface features 613 and second surface features 615 reduce the warp experienced by the glass article 600' following an IOX treatment step.
  • An amount of warp exhibited by a glass article is determined by use of a feeler gauge.
  • the glass article is disposed on a flat stage.
  • the leaves of the feeler gauge are disposed underneath the glass article to determine the height of the gap between the glass article and the flat stage.
  • a plurality of points e.g., eight points (1 -8) are measured for each side of the glass article 100 (e.g., for a total of sixteen measurements). The maximum measurement from the sixteen points is considered the amount of warp for the particular glass article.
  • the amount of warp of a glass article may change following individual processing steps.
  • a glass article may exhibit a particular amount of warp following the anti-glare process, a particular amount of warp following a trim process wherein the glass article is cut or otherwise shaped to a particular size, and a particular amount of warp following an IOX process.
  • the double-sided anti-glare treatment reduces the amount of warp of a glass article.
  • eighteen ( 18) samples were evaluated for warp using a feeler gauge prior to anti-glare treatment, after anti-glare treatment, after a trimming process, and after IOX. Bare glass, glass with a single-sided anti-glare treatment, and glass with two- sided anti -glare treatment were evaluated for warp.
  • the glass used had the following composition in mol% on an oxide basis: 67.37 % Si0 2 ; 3.67% B 2 0 3 ; 12.73% A1 2 0 3 ; 13.77 % Na 2 0; 0.01 % K 2 0; 2.39% MgO; 0.003% Ti0 2 ; 0.01 % Fe 2 0 3 ; 0.01 % Zr0 2 ; 0.09% Sn0 2 .
  • the glass was 2mm in thickness and was 590mm x 380mm for an etching cream anti-glare treatment. Following the anti-glare treatment, the glass was trimmed to 536mm x 348mm and then ion-exchanged.
  • Table 1 was composed of 10-20 wt% N3 ⁇ 4F and 10-20 wt% NH 4 HF 2 , 0-10 wt% KN0 3 , 5-20 wt% BaS0 4 as filler, 1-10 wt% soluble starch, 0-5wt% Polyacrylamide, l-25wt% CuCl 2 .
  • the solid powder chemicals were first weighted and mixed in a plastic container, and then 10-40wt% of deionized (DI) water was added into the container with manual agitation. After that, 5-20wt% of concentrated HF acid (40%) solution was added slowly with manual agitation with a plastic stick.
  • DI deionized
  • FIG. 8 shows warp variation for bare glass with no anti-glare treatment, glass with a single anti-glare treatment, and glass with double-sided anti-glare treatment.
  • Two-side anti-glare treated glass has similar warp changing behavior with bare glass during anti-glare, trim and IOX treatment; their variation rates are very low.
  • Single-side anti-glare treated glass has much more warp variation rate than double-side etching glass and bare glass.
  • FIG. 8 indicates that the single-side etching glasses show large warp increasing (50%) due to anti-glare treatment and even higher warp increased (119%) by the IOX treatment. Comparatively, the double-side etching glasses exhibit similar warp change behavior as low as bare glass, which is ⁇ 13%.
  • the resulting anti -glare attributes of haze, gloss 60, DOI and sparkle for the samples #7-#18 are listed in Table 2 below.
  • optical performance of the glass article is not significantly affected by the anti-glare treatment on both surfaces of the glass article.
  • dual-surface anti-glare treatment is a viable method for reducing warp in glass articles, particularly large glass articles having a dimension of 500 mm or greater.
  • optical performance of a glass article with dual-surface anti- glass treatment will be different depending on if there is an air gap between the glass article and one or more additional components of a display panel, or if one surface of the glass article is direct bonded to the one or more additional components of the display by an index- matching adhesive.
  • optical performance with respect to haze and gloss may be improved when the glass article is bonded to one or more components of the display panel by an index-matching adhesive over the case where there is an air gap present.
  • the anti-glare treatment for both surfaces of the glass article may be manipulated such that a total desired haze and/or gloss value for the glass article is achieved.
  • the anti -glare surfaces may be such that each surface contributes to 50% of the haze and/or gloss value. Any other ratios are also possible.
  • parameters of the anti-glare treatment may be manipulated such that the environment facing surface may contribute 40% of the haze and/or gloss value and the device facing surface may contribute 60% of the haze and/or gloss value and vice versa.
  • embodiments of the present disclosure reduce the amount of warp in anti-glare glass articles before and/or after an ion-exchange process by treating both surfaces of the glass articles with an anti -glare treatment.

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Abstract

La présente invention concerne des articles à base de verre antireflet et des procédés de traitement d'un article à base de verre pour réduire le gauchissement. Un procédé de traitement d'un article à base de verre comprend la gravure d'une première surface de l'article en verre pour créer une première surface antireflet ayant une pluralité de premières caractéristiques antireflet et la gravure d'une deuxième surface de l'article à base de verre pour créer une deuxième surface antireflet ayant une pluralité de deuxièmes caractéristiques antireflet. Au moins l'un parmi une longueur, une largeur et une diagonale de l'article à base de verre est supérieure ou égale à 500 mm. Une différence de gauchissement entre une première valeur de gauchissement avant la gravure de la première surface et de la deuxième surface et une deuxième valeur de gauchissement après la gravure de la première surface et de la deuxième surface est inférieure ou égale à 0,15 mm sur chacun d'un ou plusieurs intervalles de 500 mm de longueur, de largeur ou de diagonale de l'article à base de verre.
PCT/US2018/017579 2017-02-14 2018-02-09 Articles à base de verre antireflet à faible brillance à gauchissement réduit et procédés de réduction du gauchissement dans des articles à base de verre antireflet Ceased WO2018152021A1 (fr)

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CN201710078743.4A CN108439813B (zh) 2017-02-14 2017-02-14 具有弯曲减少的基于低闪光防眩光玻璃的制品和减少基于防眩光玻璃的制品中的弯曲的方法
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190256410A1 (en) * 2018-02-22 2019-08-22 AGC Inc. Translucent structure
WO2020243210A1 (fr) * 2019-05-30 2020-12-03 Corning Incorporated Articles en verre texturé et leurs procédés de fabrication
WO2020264230A1 (fr) * 2019-06-28 2020-12-30 Corning Incorporated Procédés et appareil de fabrication d'un article à base de verre
US20220267195A1 (en) * 2019-07-12 2022-08-25 Corning Incorporated Antiglare surface with ultra-low sparkle and the method of making the same

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111204989A (zh) * 2018-11-22 2020-05-29 康宁股份有限公司 低翘曲的强化制品以及制造其的不对称离子交换方法
CN111348837A (zh) * 2018-12-20 2020-06-30 康宁股份有限公司 强化制品、强化玻璃制品以及制造强化制品的方法
CN110809379A (zh) * 2019-11-01 2020-02-18 Oppo广东移动通信有限公司 壳体组件及其制备方法和电子设备
WO2021261603A1 (fr) * 2020-06-26 2021-12-30 日本板硝子株式会社 Dispositif d'affichage
CN116125564B (zh) * 2021-11-12 2025-02-18 广东小天才科技有限公司 Ag盖板及加工方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050258135A1 (en) * 2002-11-19 2005-11-24 Hirokaza Ishikawa Method of cutting glass substrate material
US20130093312A1 (en) * 2010-07-15 2013-04-18 Asahi Glass Company, Limited Plasma display device
WO2014012003A2 (fr) * 2012-07-12 2014-01-16 Corning Incorporated Surface de verre texturée et procédés de fabrication
US8778496B2 (en) * 2010-11-30 2014-07-15 Corning Incorporated Anti-glare glass sheet having compressive stress equipoise and methods thereof
WO2014130515A1 (fr) * 2013-02-25 2014-08-28 Corning Incorporated Procédés de mesure de l'asymétrie d'un processus de fabrication de vitres
WO2014139147A1 (fr) * 2013-03-15 2014-09-18 Schott Glass Technologies (Suzhou) Co. Ltd. Verre ultramince souple chimiquement trempé
US20160023946A1 (en) * 2013-03-19 2016-01-28 Nippon Sheet Glass Company, Limited Glass sheet and method for producing glass sheet
US20160046519A1 (en) * 2013-04-08 2016-02-18 Nippon Sheet Glass Company Glass plate and process for manufacturing glass plate

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1017022B (it) 1974-07-02 1977-07-20 Marazzi Ceramica Impianto automatico perfezionato per l essiccazione e la monocot tura rapida di piastrelle cerami che
US4354828A (en) 1981-03-18 1982-10-19 Southwire Company Method and apparatus for producing uniformly baked anodes
US8598771B2 (en) * 2009-09-15 2013-12-03 Corning Incorporated Glass and display having anti-glare properties
US9085484B2 (en) * 2010-04-30 2015-07-21 Corning Incorporated Anti-glare surface treatment method and articles thereof
US9017566B2 (en) 2010-04-30 2015-04-28 Corning Incorporated Anti-glare surface treatment method and articles thereof

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050258135A1 (en) * 2002-11-19 2005-11-24 Hirokaza Ishikawa Method of cutting glass substrate material
US20130093312A1 (en) * 2010-07-15 2013-04-18 Asahi Glass Company, Limited Plasma display device
US8778496B2 (en) * 2010-11-30 2014-07-15 Corning Incorporated Anti-glare glass sheet having compressive stress equipoise and methods thereof
WO2014012003A2 (fr) * 2012-07-12 2014-01-16 Corning Incorporated Surface de verre texturée et procédés de fabrication
WO2014130515A1 (fr) * 2013-02-25 2014-08-28 Corning Incorporated Procédés de mesure de l'asymétrie d'un processus de fabrication de vitres
WO2014139147A1 (fr) * 2013-03-15 2014-09-18 Schott Glass Technologies (Suzhou) Co. Ltd. Verre ultramince souple chimiquement trempé
US20160023946A1 (en) * 2013-03-19 2016-01-28 Nippon Sheet Glass Company, Limited Glass sheet and method for producing glass sheet
US20160046519A1 (en) * 2013-04-08 2016-02-18 Nippon Sheet Glass Company Glass plate and process for manufacturing glass plate

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190256410A1 (en) * 2018-02-22 2019-08-22 AGC Inc. Translucent structure
US11267750B2 (en) * 2018-02-22 2022-03-08 AGC Inc. Translucent structure
WO2020243210A1 (fr) * 2019-05-30 2020-12-03 Corning Incorporated Articles en verre texturé et leurs procédés de fabrication
US11306024B2 (en) 2019-05-30 2022-04-19 Corning Incorporated Textured glass articles and methods of making the same
US11731902B2 (en) 2019-05-30 2023-08-22 Corning Incorporated Textured glass articles and methods of making the same
WO2020264230A1 (fr) * 2019-06-28 2020-12-30 Corning Incorporated Procédés et appareil de fabrication d'un article à base de verre
US11655178B2 (en) 2019-06-28 2023-05-23 Corning Incorporated Methods and apparatus for manufacturing a glass-based article
US20220267195A1 (en) * 2019-07-12 2022-08-25 Corning Incorporated Antiglare surface with ultra-low sparkle and the method of making the same

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